1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
riadik2000 [5.3K]
3 years ago
7

(b) Out of 200 students in an examination of class IX, 140 passed in Maths, 120 passed in Scien

Mathematics
2 answers:
Elanso [62]3 years ago
5 0

Answer:

P(A)= probability of who passed maths

=140/200

P(B)= probability of who passed Sci

= 120/200

P(A&B)=(140+120-200+40)/200

P(A|B)'=40/200

iren [92.7K]3 years ago
3 0

Answer:

n(U)=200

n(M)=140

n(S)=120

n(MuS)complement=40

n(MuS)=n(U)-n(MuS)complement

=200-40

=160

n(MnS)=n(M)+n(S)-n(MuS)

=140+120-160

=260-160

=100

You might be interested in
The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000
valina [46]

Answer: 61,750 miles

Step-by-step explanation:

Given : The p-value of the tires to outlast the warranty = 0.96

The probability that corresponds to 0.96 from a Normal distribution table is 1.75.

Mean : \mu=60,000\text{ miles}

Standard deviation : \sigma=1000\text{ miles}

The formula for z-score is given by  : -

z=\dfrac{x-\mu}{\sigma}\\\\\Rightarrow\ 1.75=\dfrac{x-60000}{1000}\\\\\Rightarrow\ x-60000=1750\\\\\Rightarrow\ x=61750

Hence, the tread life of tire should be 61,750 miles if they want 96% of the tires to outlast the warranty.

3 0
3 years ago
HELP ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️WILL MARK BRAINLYEST‼️‼️‼️
Rainbow [258]

Answer:

8 one-dollar bills

3 five-dollar bills

2 ten-dollar bills

Step-by-step explanation:

Let x = # of one-dollar bills, y = # of five-dollar bills, and z = # of ten-dollar bills. Total amount in the wallet is $43, so the first equation would be 1x + 5y + 10z = 43. Next, there are 4 times as many one-dollar bills as ten-dollar bills, so x = 4z. There are 13 bills in total, so x + y + z = 13

x + 5y + 10z = 43

x = 4z

x + y + z = 13

x + 5y + 10z = 43

x + 0y - 4z = 0

x + y + z = 13

5y + 14z = 43

-y - 5z = -13

5y + 14z = 43

-5y - 25z = -65

-11z = -22

z = 2

x = 4z

x = 4*2 = 8

x + y + z = 13

8 + y + 2 = 13

10 + y = 13

y = 3

3 0
1 year ago
You don’t know how important this is Please help me!!
Natali5045456 [20]

Answer:

f(x)=\frac{7}{5}x-\frac{6}{5}

Step-by-step explanation:

First put 7x-5y=6 into slope intercept form

y=\frac{7}{5}x-\frac{6}{5}

Then put it into f(x) form

7 0
2 years ago
C=5/9(F−32)
butalik [34]

Answer:

d

Step-by-step explanation:

5 0
3 years ago
Find the volume of a right circular cone that has a height of 11.8 ft and a base with a radius of 7.3 ft. Round your answer to t
lora16 [44]

Answer:

The answer to your question is 658.2 ft³

Step-by-step explanation:

Data

Volume = x

height = 11.8 ft

radius = 7.3 ft

Formula

Volume of a cone = 1/3πr²h

Process

1.- Calculate the volume

Volume = 1/3(3.14)(7.3)²(11.8)

Volume = 1/3(3.14)(7.3)²(11.8)

Volume = 1/3(3.14)(53.29)(11.8)

Volume = 1/3(1974.5)

Rounded to the nearest tenth

Volume =  658.2 ft³

3 0
3 years ago
Other questions:
  • if the parent function is square root of x, describe the translation of this function square root x+7
    12·1 answer
  • The volume of a cube is 400 m3.
    13·1 answer
  • One grain of sand weighs 0.0007g. How many grains of sand are in 6300kg. Leave your answer in standard form
    5·1 answer
  • e is 150% more than d . what is the ratio d:e in its simplest form? what is the ratio e:d in the form 1::n​
    6·1 answer
  • A leaky toilet in Mr. Walker's house increases his water bill by $2.14 each day. The toilet leaks for 19 days in April and all 3
    14·1 answer
  • Please help asap for exams
    10·1 answer
  • I need help with that one please
    10·1 answer
  • Find the midpoint of points A(-7,7) and B(-1,-3) graphically.
    11·1 answer
  • PLEASE HELP ill give brainliest if you answer and explain it correctly!!!!!!!! its due soon
    9·1 answer
  • How much money will you have in 8 years if you invest $4000 at 2% compounded quarterly
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!